are modular, such as C2924M with two expansion slots. The plug-in card of the expansion slot can be placed in the 100BaseTx module and 100baseFx module, or even the ATM module and Gigabit Ethernet Interface Card (GBIC ). The details are as follows:
C2912-XL: 12 port 10/100 BaseTx adaptive
C2912MF-XL: 2 expansion slots, 12 port 100 BaseFX
C2924-XL: 24 port 10/100 BaseTX adaptive
C2924C-XL: 22 port 10/100 BaseTX adaptive, 2 port 100 BaseFX
The packet forwarding rate (throughput) of the switch refers to the ability of the switch to forward packets, in PPS (packets per second), that is, how many packets per second the switch can forward.
Switch interface rate: 100MBIT/S Ethernet interface, the students who have learned the computer know that every 8 bits make up a byte, so a gigabit interface is converted into a node =12.5mbyte/s, that is, the Ethernet interface can forward 12.5M bytes
Calculation Formula description
The backboard bandwidth of A vswitch is the maximum amount of data that can be transferred between the vswitch interface processor or interface card and the data bus. The backboard bandwidth indicates the total data exchange capability of a vswitch. The unit is Gbps. It is also called the switching bandwidth. The bandwidth of A vswitch ranges from several Gbps to hundreds of Gbps. The higher the bandwidth of A vswitch, the stronger the ability to process data, but
Three-dimensional out of the new
At present, more and more manufacturers to enter the Ethernet market, new brands and new products continue to emerge, it seems that there has been a trend of homogenization of competition. However, it is worth mentioning that the Ethernet switch in the market number of expansion, while the quality requirements are also constantly improving. Just to meet the simple connection and data transmission function, obviously can not adapt to future needs. Cisco believes
The maximum rate of Ethernet switch stack is faster, Which is multiple times faster than the port rate of the switch. Not all switches support Ethernet switch stack, when the number of ports that a single switch can provide is insufficient to meet the requirements of the network computer, more than two switches must provide the corresponding number of ports, which also involves the connection between switches. Basically, there are two ways to connect a vswitch: Ethernet switch stack and cascade.
imagined. At present, people's requirements for bandwidth are rapidly increasing, such as the massive data transmission channels necessary for the rapid development of storage networks; a large number of metro networks with Mbps of bandwidth convergence; bandwidth support for a wide range of broadband applications, data centralization for large financial institutions, and expansion of complex applications such as enterprise core businesses, ERP, and CRM. Today, the mainstream architecture of
convergence; bandwidth support required by a wide range of broadband applications; data concentration of large financial institutions; and expansion of complex applications such as enterprise core business, ERP, and CRM. Today, the mainstream architecture of gigabit backbone and gigabit access will gradually transition to the 10-Gigabit backbone and
Here, I take the H3C WA2600 + WX3024 802.11n wireless solution as an example to analyze the difficulties in deploying wireless networks.
1. high bandwidth, enabling users of the 11n and 11g to reach the highest rate at the same time.
The 802.11n protocol can reach a maximum speed of Mbps and has already exceeded the Ethernet speed of Mbps. Therefore, the 11n AP is upgraded to a Gigabit Ethernet port, the corresponding wireless switch must also be a
Ethernet adds a new feature: Automatic negotiation, which allows two devices to negotiate their operating mode and transmission speed. The physical layer achieves Gigabit Ethernet. IEEE creates a Gigabit Ethernet under the name of 802.3z. The design goal of Gigabit Ethernet is as follows: 1. upgrade the data rate to 1 Gigabi
go and cannot claim A claim.
Iii. Gigabit cabling is more serious
The first consideration for implementing Gigabit Ethernet is wiring. First, optical cables must be used for a specific Gigabit connection. For example, optical cables must be used for any vswitch or server connection or any Gigabit connection that excee
large enterprises. Because the network size of small enterprises is small, the performance requirements of the backbone networks are not high, the selected backbone switch does not have to have a large packet forwarding rate and backplane capacity. Large enterprises have a large number of computer nodes and need to process a large amount of data, which requires a lot of performance requirements for backbone networks, the selected backbone switch requires a large packet forwarding rate and backp
, people's requirements for bandwidth are rapidly increasing, such as the massive data transmission channels necessary for the rapid development of storage networks; a large number of metro networks with Mbps of bandwidth convergence; bandwidth support for a wide range of broadband applications, data centralization for large financial institutions, and expansion of complex applications such as enterprise core businesses, ERP, and CRM. Today, the mainstream architecture of
4b/5b Coding PrincipleWhat is 4b/5b encoding?4b/5b Encoding is one of the PHY layer encoding types in Gigabit Ethernet and Industrial Ethernet , which is the 5bit binary number to represent 4bit Binary number Why do I need to encode 4b/5b ?In the communication network, the receiving end needs to recover the clock information from the received data to ensure synchronization, which requires the transmission of the line in the binary stream has enough
4B/5B Coding principleWhat is 4b/5b encoding? 4B/5B encoding is one of the line layer encoding types in the Gigabit Ethernet (ie Fast Ethernet) , which is the 4bit binary number represented by the 5bit binary number , as shown in the following table:Why do I need to encode 4b/5b? In the communication network, the receiving end needs to recover the clock information from the received data to ensure synchronization, which requires the transmission of t
, as long as the statue is in, we can paint and take pictures at any time. If you are an "ice cream", do you need to take a big photo at home, or do you want to print a 1:1 real-person model in 3D? In fact, BIM also has a lot of geometric details, not less than CAD, but these geometric details are encapsulated. After establishing the relationship between the building object and the building object, to obtain these geometric details. What these geometric details mean to us is that they are proper
"Introduction" is a Cisco with Stackwise Plus? Catalyst? The 3750-E series switches are an enterprise-class, stand-alone, stackable wiring switch family that supports the deployment of secure converged applications and maximizes investment protection based on the development of network and application requirements. By combining A/V and power over Ethernet (PoE) configuration with a Gigabit Ethernet uplink, the Cisco Catalyst 3750-E can support applica
1 802.11ac can't give you a gigabit level (gigabit) throughput
Although the WiFi consortium announces that it can theoretically achieve the throughput of 1.3 Gbps, it is twice times more than 802.11n. means that the network can simultaneously support the transmission of high-definition quality video streams to multiple devices. In fact, you can't see 802.11AC theoretically 1.3 Gbps throughput unless you're
In today's wiring market, the media and the most hype of the business is "gigabit." Remember not long ago still hype "Super 5 Class", and with "gigabit" Ethernet standards, cabling manufacturers have launched their own support "gigabit" Ethernet "6" or even "7" wiring system. The introduction of advanced products is a good thing, but I still want to remind the va
wiring companies, actively advocated a new generation of high bandwidth multimode fiber (NGMMF) gradually to the practical, its ability to provide the transmission bandwidth and distance is very close to the current Single-mode fiber, while the overall network cost is significantly lower than single-mode fiber. For example, the cabling giant American Avaya Company since 2000 in the domestic push lazrspeed fiber average bandwidth per kilometer 2000mhz@850nm, its transmission
The goal of the Student Dormitory network in the east campus of Huazhong University of Science and Technology is to connect a total of 10694 information points of 15 new yunyuan student apartments to the campus network, each access point can access the campus network and Internet in the dormitory.Requirement Analysis 1. The core switch device requires strong processing capabilities and good security, reliability, and scalability. It supports various mature technologies and can be smoothly upgrad
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